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Technology
Assessment & Research (TA&R) Program
| Project Number |
591 |
| Date of Summary |
December 5, 2007 |
| Subject |
Evaluate Accuracy of Polyester Subrope Damage Detection
Performed by ROVs Following Hurricanes and Other Events |
| Performing Activity |
Stress Engineering Services, Inc. |
| Principal Investigator |
Ray Ayers |
| Contracting Agency |
Minerals Management Service |
| Estimated Completion |
December 5, 2007 |
| Description |
This project investigated the accuracy of non-invasive deepwater subsea
inspections performed by common ROV-supported inspection tools and
provided a comprehensive assessment of the knowledge gained from recent
work on subrope behavior. The objectives were:
- Evaluate accuracy of polyester subrope damage detection performed by
ROVs following hurricanes and other events (i.e., loop current) that
exceed the 100 year design criteria.
- Perform a quantitative evaluation to determine if ROV survey results
and resulting life damage estimates are acceptable.
- Explore the viability of a newly conceived method for predicting
remaining life based on adapting traditional methods for application for
synthetic ropes, like polyester.
- Identify non-invasive inspection methods other than ROV surveys and
compare ROV inspection to physical insert testing to determine the level
of accuracy that can be expected.
- Identify the most reliable methods, including but not limited to
insert tests, to verify that the mooring system is fit for purpose.
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| Progress |
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| Reports |
| AA
(1393.03 KB) |
Accuracy of Polyester Subrope Damage Detection by ROV Inspection and
Assessment of Remaining Rope Strength and Life, November 6, 2007, by Ray
R. Ayers of Stress Engineering Services and Nick O'Hear of TTI, Ltd., Stress
Engineering Services, Inc., Houston, TX |
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